Question: who doctoral student of advisor of Johannes diderik van der waals ?
Paraphrase: who doctoral understudy of advisor of Johannes diderik van der waals ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q131721 wdt:P184 ?X . ?X wdt:P185 ?answer}
Answer: Hendrik Lorentz, Johannes Diderik van der Waals, Johannes Bosscha, Herman Haga, Louis Bleekrode, Willem Jacobus Janssen